RetroAchievements
7.9#1 in game achievement trackersFree planFree planAndroidiOSWebAPI
VisitRetroAchievements suits players who want achievement tracking, profiles, and friendly competition while playing supported retro games through compatible emulators. It also has options for developers using its public API and players willing to start sessions online.
It suits Steam achievement hunters who want progress analytics, guides, and social comparisons in a browser. Users must keep their Steam profile and game details public for data access.